{"version":"1.0","type":"rich","title":"Fork of Portland Map","description":"This example displays a choropleth map of Portland neighborhoods, rendering geographic boundaries as green SVG paths. The map uses a conic equal-area projection configured with `d3.geoConicEqualArea` and `d3.geoPath` to project and draw the shapes. Data is loaded from a TopoJSON file via `d3.json` and converted to GeoJSON features using `topojson.feature`. The visualization is built with React, where the `Marks` component maps each feature to a path element, and styling is applied through CSS to highlight the neighborhood borders.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/3b538772ec394100b0b654a722915abb?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}